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Finding the Fourth Proportional to 60,234.21, 90,489.81 and 42,505.68

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Solution

The fourth proportional to 60,234.21, 90,489.81 and 42,505.68 is: 63,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,234.21 : 90,489.81 = 42,505.68 : x
  2. Step 2: Convert to fraction form
    60,234.21/90,489.81 = 42,505.68/x
  3. Step 3: Cross multiply
    60,234.21x = 90,489.81 × 42,505.68
  4. Step 4: Simplify right side
    60,234.21x = 3,846,330,907.12
  5. Step 5: Solve for x
    x = 3,846,330,907.12/60,234.21
  6. Step 6: Final answer
    x = 63,856.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.